School of Allied Health, Department of Life Sciences, University of Leicester, United Kingdom.
School of Allied Health, Department of Life Sciences, University of Leicester, United Kingdom.
Phys Ther Sport. 2019 May;37:69-76. doi: 10.1016/j.ptsp.2019.03.002. Epub 2019 Mar 9.
Determine how the strength and endurance of the plantar flexors are affected by Achilles tendinopathy and whether one muscle is more affected than another.
Case control study.
University Laboratory.
39 Runners with mid-portion Achilles tendinopathy and 38 healthy runners participated in this study.
Isokinetic dynamometry was completed bilaterally in two knee positions on all subjects to assess the torque and endurance capacity of the plantar flexors.
Subjects with Achilles tendinopathy were statistically weaker (by 26.1Nm Concentric 90°/sec, 14,8Nm Concentric 225°/sec and 55.5Nm Eccentric 90°/sec for knee extended testing and 17.3Nm, 10.1Nm and 52.3Nm for the flexed knee respectively) than healthy controls at all isokinetic test speeds and contraction modes irrespective of knee position (p value = <0.001). The endurance capacity of the plantar flexors was significantly reduced (Total work done 613.5Nm less) in subjects with Achilles tendinopathy when compared to the healthy controls (p value = <0.001).
Achilles tendinopathy is associated with large deficits in plantar flexor torque and endurance. The deficits are bilateral in nature and appear to be explained by a greater loss of the soleus force generating capacity rather than the gastrocnemius.
确定跟腱病如何影响跖屈肌的力量和耐力，以及哪块肌肉受影响更大。
病例对照研究。
大学实验室。
39 名中段跟腱病患者和 38 名健康跑步者参与了这项研究。
所有受试者均在两种膝关节位置进行等速测力测试，以评估跖屈肌的扭矩和耐力能力。
跟腱病患者在所有等速测试速度和收缩模式下（无论膝关节位置如何），与健康对照组相比，在膝关节伸展测试时（分别为 26.1Nm 向心 90°/sec、14.8Nm 向心 225°/sec 和 55.5Nm 离心 90°/sec）和膝关节弯曲测试时（分别为 17.3Nm、10.1Nm 和 52.3Nm），力量明显较弱（分别为 26.1Nm 向心 90°/sec、14.8Nm 向心 225°/sec 和 55.5Nm 离心 90°/sec），统计上有显著性差异（p 值均<0.001）。与健康对照组相比，跟腱病患者的跖屈肌耐力能力显著降低（总做功减少 613.5Nm）（p 值<0.001）。
跟腱病与跖屈肌扭矩和耐力的明显缺陷有关。这些缺陷是双侧的，似乎是由于比目鱼肌产生力的能力丧失更大，而不是腓肠肌。
